LINE_CALLINFO message

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The TSPI LINE_CALLINFO message is sent to the LINEEVENT callback function when the call information about the specified call has changed. TAPI can invoke lineGetCallInfo to determine the current call information.


LINE_CALLINFO
htLine = (HTAPILINE) hLineDevice;
htCall = (HTAPICALL) hCallDevice;
dwMsg = (DWORD) LINE_CALLINFO;
dwParam1 = (DWORD) CallInfoState;
dwParam2 = (DWORD) 0;
dwParam3 = (DWORD) 0;

Parameters

  • htLine
    The TAPI opaque object handle to the line device.

  • htCall
    The TAPI opaque object handle to the call device.

  • dwMsg
    The value LINE_CALLINFO.

  • dwParam1
    Specifies the call information item that has changed. This parameter can be a combination of the LINECALLINFOSTATE_ constants.

  • dwParam2
    Unused.

  • dwParam3
    Unused.

Remarks

The LINE_CALLINFO message is sent to TAPI whenever the event occurs and TAPI has the line open. However, no LINE_CALLINFO messages are sent for a call after the call has entered the idle state.

Requirements

TAPI version

 Requires TAPI 2.0 or later

Header

 Tapi.h

See also

LINECALLINFOSTATE_ Constants

TSPI_lineGetCallInfo